12266-6306 DUN 252 AB (Acrux)

 
 
12h 26m 35.94s -63° 05' 56.6" P.A. 111.00 sep 3.5 mag 1.25,1.55 Sp B1V dist. 98.72 pc (322.02 l.y.)
 
 
Coord 2000 12266-6306 Discov num DUN 252 Comp AB Coord arcsec 2000 12 26 35.94 -63 05 56.6
Date first 1826 Date last 2020 Obs 103
Pa first 114 Pa last 111.4 P.A. Now (θ) 111.4°
Sep first 5.4 Sep last 3.518 Sep. Now (ρ) 3.518"
Mag pri 1.25 Mag sec 1.55 delta mag (ΔM) 0.3 Spectral class B1V (blue-white)
Pri motion ra -035 Sec motion ra -043
Pri motion dec -015 Sec motion dec -008
Notes N U (See Notes, Proper motion indicates non-physical)
rPM=0.243 (< 0.3, Physical double)
This double is not physical.
 
 
12266-6306 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show Acrux 251904 12 26 36 -63 05 57 DUN 252 AB 2020 103 111 3.5 1.25 1.55 0.30 <===
Show 251904 12 26 36 -63 05 57 DUN 252 AC 2020 36 203 89.0 1.25 4.80 3.55
Show 251904 12 26 36 -63 05 57 ANT 1 AG 2014 5 145 58.7 1.25 12.00 10.75
Show 251904 12 26 36 -63 05 57 ANT 1 AH 2013 3 167 47.3 1.25 13.00 11.75
Show 251904 12 26 36 -63 05 57 ANT 1 AI 2013 4 227 63.3 1.25 12.00 10.75
Show 251904 12 26 36 -63 05 57 ANT 7 AJ 2010 2 344 29.6 1.25 12.00 10.75
Show 251904 12 26 36 -63 05 57 ANT 7 AK 2010 2 218 125.2 1.25 13.00 11.75
Show 251903 12 26 36 -63 05 58 DUN 252 BC 2020 18 203 89.0 1.55 4.80 3.25
Show 251903 12 26 31 -63 07 20 TOK 7 CD 2000 2 53 2.4 5.40 10.50 5.10
Show 251903 12 26 31 -63 07 20 TOK 7 CE 1997 1 214 4.9 5.40 17.00 11.60
Show 251903 12 26 31 -63 07 20 TOK 7 CF 2015 2 114 7.4 5.40 15.97 10.57
11-fold system
11 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Common name Acrux Constellation Crux SAO 251904 HIP 60718
Tycho2 8979-03464-1 HD 108248 HR 4730 GC 16952
CP CP-62 2745 Bayer Alpha 1 Crucis Bayer name Alp1 Cru FK5 462
Distance 98.72 Distance ly 322.02 Bayer greek α1 Cru
Meaning a modern contraction of the Bayer designation, coined in the 19th century, but which entered into common use only by the mid-20th century
 
 
WDS 12266-6306 DUN 252 AB (Acrux) : NOTES
 
 
discov_num notes refcode
DUN 252 alp 1 Cru = Acrux. According to R.G. Aitken, this was discovered by A__1935f
the Jesuit missionary, Father Fontenay, at the Cape of Good Hope, in Fon1733
1685, although the triple was first measured by Dunlop and called Dun1829
DUN 123AB and DUN 122AC. Spectroscopic binary. CPM with HR 4729 and
HR 4731, so there are at least five components in the system.
Hyperbolic orbit by Hopmann (1960). Hop1960b
q = periastron distance in the true orbit = 0".916
Both A and B appear to be spectroscopic binaries with undetermined Bte1967
periods (see Batten 1967). Fin1970b
 
 
REFERENCES
 
 
refcode metd author reference
A__1935f - Aitken, R.G. 1935QB821.A3.......
A__1935f The Binary Stars, 1935
Bte1967 - Batten, A.H. 1967PDAO...13..249B
Bte1967 Pub. DAO Victoria 13, 249, 1967
Dun1829 Ma - Dunlop, J. 1829MmRAS...3..257D
Dun1829 MemRAS 3, 257, 1829
Dun1829 some measures corrected in LRR2022
Fin1970b - Finsen, W.S. & Worley, C.E. 1970ROCi..130..203F
Fin1970b Republic Obs. Circ. 130, 203, 1970 (Third Orbit Catalog)
Fon1733 - Fontenay, Father ...................
Fon1733 Paris, Histoire de l'Academie des Sciences avant son renouvellement en 1699, 2,
Fon1733 p 19, 1733
Hop1960b orb - Hopmann, J. 1960MiWie..10..227H
Hop1960b Mitt. Sternw. Wien 10, 227-256, 1960
 
 
DISCOVERER
 
 
idgroup discov author
1 ANT Anton, R.
44 TOK Tokovinin, A.A.
91 TOK Tokovinin, A.A., Balega, Y.Y., Pluzhnik, E.A., Shatsky, N.I., Gorynya, N.A., &
91 TOK Weigelt, G.
105 TOK Tokovinin, A., Cantarutti, R., Tighe, R., Schurter, P., van der Bliek, N.,
105 TOK Martinez, M., & Mondaca, E.
173 TOK Tokovinin, A., Corbett, H., Fors, O., Howard, W., Law, N.M., Moe, M.,
173 TOK Ratzloff, J. & Walter, F.M.
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
12266-6306 DUN 252 AB 2007 89 114 4.0 1.25 1.55 B1V NOD 122635.94-630556.6
12266-6306 DUN 252 AB 2010 91 112 4.0 1.25 1.55 B1V NOD 122635.94-630556.6
12266-6306 DUN 252 AB 2012 92 111 3.6 1.25 1.55 B1V NOD 122635.94-630556.6
12266-6306 DUN 252 AB 2013 94 112 3.9 1.25 1.55 B1V NOD 122635.94-630556.6
12266-6306 DUN 252 AB 2014 95 112 4.0 1.25 1.55 B1V NOD 122635.94-630556.6
12266-6306 DUN 252 AB 2015 97 112 3.9 1.25 1.55 B1V NOD 122635.94-630556.6
12266-6306 DUN 252 AB 2016 100 112 4.2 1.25 1.55 B1V NU 122635.94-630556.6
12266-6306 DUN 252 AB 2020 101 111 3.5 1.25 1.55 B1V NU 122635.94-630556.6

If you need more information about this double, apply for a data request form to the WDS.

 
 
WDS 12266-6306 DUN 252 AB (Acrux) : VISUAL OBSERVATIONS REPORTS
 
 
No records found.


 
 
WDS 12266-6306 DUN 252 AB (Acrux) : MEASURES
 
 
No records found.

 
 
WDS 12266-6306 (Acrux) : VIRTUAL EYEPIECE
 
 

12266-6306 DUN 252A mag 1.25 Sp B1V 12266-6306 DUN 252B sep 3.8 P.A. 115.20 mag 1.55 Sp B0.5IV 12266-6306 TOK   7C sep 90.2 P.A. 202.40 mag 5.4 Sp B4IV 12266-6306 TOK   7D sep 88.5 P.A. 202.20 mag 10.5 12266-6306 TOK   7E sep 94.4 P.A. 202.10 mag 17 12266-6306 TOK   7F sep 91.9 P.A. 199.90 mag 15.97 12266-6306 ANT   1G sep 50.6 P.A. 162.60 mag 12 12266-6306 ANT   1H sep 46.3 P.A. 173.90 mag 13 12266-6306 ANT   1I sep 47.9 P.A. 206.00 mag 12 12266-6306 ANT   7J sep 28.6 P.A. 352.40 mag 12 12266-6306 ANT   7K sep 104.8 P.A. 199.30 mag 13 virtual eyepiece
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Radius:
Components only
 
 
WDS 12266-6306 (Acrux) : ALADIN DSS IMAGE @ 12h 26m 35.94s -63° 05' 56.6"
 
 
 
 
WDS 12266-6306 DUN 252 AB (Acrux) : NEIGHBORHOODS
 
 
FoV:
Limit:
Primaries only


12266-6306  DUN 252AB (Acrux) distance=1' 12266-6306  ANT   1AG (Acrux) distance=1' 12266-6306  ANT   1AH (Acrux) distance=1' 12266-6306  ANT   1AI (Acrux) distance=1' 12266-6306  DUN 252AC (Acrux) distance=1' 12266-6306  ANT   7AJ (Acrux) distance=1' 12266-6306  ANT   7AK (Acrux) distance=1' 12266-6306  DUN 252BC distance=1' 12266-6306  TOK   7CE distance=2' 12266-6306  TOK   7CF distance=2' 12266-6306  TOK   7CD distance=2' 12274-6315  KPP3870 distance=11' 12286-6259  POM   9 distance=16' 12290-6312  KPP3871CD distance=18' 12266-6248  VOU   6 distance=19' 12237-6258  TOB  69 distance=22' 12233-6304  TOB  67 distance=23' 12232-6314  TOB  66AB distance=26' 12232-6314  TOB  66AC distance=26' 12247-6238  TDS8369AB distance=31' 12247-6238  JSP 531AC distance=31' 12225-6323  TDS8354 distance=33' 12229-6241  TDS8359 distance=36' 12291-6228  I  1098 distance=42' 12319-6330  DSG  15 distance=44' 12220-6233  TOB  60 distance=46' 12192-6303  TDS8324 distance=51' 12237-6352  JNN 172EG distance=51' 12237-6352  JNN 172EH distance=51' 12237-6352  JNN 172EI distance=51' 12320-6342  TDS8424AB distance=51' 12333-6330  KRV   8 distance=52' 12202-6341  FIN 197 distance=56' 12258-6401  MOC   5AB (Tupa) distance=56' 12258-6401  MOC   5AC (Tupa) distance=56' 12258-6401  MOC   5AD (Tupa) distance=56' 12258-6401  MOC   5AE (Tupa) distance=56' 12258-6401  MOC   5AF (Tupa) distance=56' 12258-6401  MOC   5AG (Tupa) distance=56' 12258-6401  MOC   5AH (Tupa) distance=56' 12238-6359  HJ 4516 distance=57' 12184-6258  TDS8313 distance=57' 12183-6301  TDS8311 distance=57' 12347-6251  VVV   9 distance=57' 12183-6317  HDS1734 distance=58' 12295-6210  VVV   8 distance=60' 12352-6323  TDS8447 distance=61' 12210-6354  TOB  56 distance=61' 12213-6217  EVS  18AB distance=61' 12213-6217  KRV  39AC distance=61' 12240-6206  COO 137 distance=63' grafico limitrofi
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Show name coord_2000 discov# comp pa sep dist(')
Show Acrux 12266-6306 DUN 252 AB 111 3.5 1
Show Acrux 12266-6306 ANT 1 AG 145 58.7 1
Show Acrux 12266-6306 ANT 1 AH 167 47.3 1
Show Acrux 12266-6306 ANT 1 AI 227 63.3 1
Show Acrux 12266-6306 DUN 252 AC 203 89.0 1
Show Acrux 12266-6306 ANT 7 AJ 344 29.6 1
Show Acrux 12266-6306 ANT 7 AK 218 125.2 1
Show 12266-6306 DUN 252 BC 203 89.0 1
Show 12266-6306 TOK 7 CE 214 4.9 2
Show 12266-6306 TOK 7 CF 114 7.4 2
Show 12266-6306 TOK 7 CD 53 2.4 2
Show 12274-6315 KPP3870 116 3.8 11
Show 12286-6259 POM 9 163 7.4 16
Show 12290-6312 KPP3871 CD 265 1.5 18
Show 12266-6248 VOU 6 36 4.2 19
Show 12237-6258 TOB 69 218 16.6 22
Show 12233-6304 TOB 67 331 13.0 23
Show 12232-6314 TOB 66 AB 326 22.4 26
Show 12232-6314 TOB 66 AC 88 7.2 26
Show 12247-6238 TDS8369 AB 45 0.4 31
Show 12247-6238 JSP 531 AC 40 0.7 31
Show 12225-6323 TDS8354 212 9.7 33
Show 12229-6241 TDS8359 324 0.4 36
Show 12291-6228 I 1098 269 1.2 42
Show 12319-6330 DSG 15 45 0.1 44
Show 12220-6233 TOB 60 241 20.5 46
Show 12192-6303 TDS8324 211 0.8 51
Show 12237-6352 JNN 172 EG 75 1.6 51
Show 12237-6352 JNN 172 EH 226 2.3 51
Show 12237-6352 JNN 172 EI 14 4.6 51
Show 12320-6342 TDS8424 AB 188 0.7 51
Show 12333-6330 KRV 8 110 20.4 52
Show 12202-6341 FIN 197 83 0.4 56
Show Tupa 12258-6401 MOC 5 AB 289 2.8 56
Show Tupa 12258-6401 MOC 5 AC 41 3.1 56
Show Tupa 12258-6401 MOC 5 AD 92 3.1 56
Show Tupa 12258-6401 MOC 5 AE 305 3.5 56
Show Tupa 12258-6401 MOC 5 AF 31 3.6 56
Show Tupa 12258-6401 MOC 5 AG 147 4.8 56
Show Tupa 12258-6401 MOC 5 AH 3 4.9 56
Show 12238-6359 HJ 4516 92 23.3 57
Show 12184-6258 TDS8313 214 1.8 57
Show 12183-6301 TDS8311 239 0.4 57
Show 12347-6251 VVV 9 213 33.3 57
Show 12183-6317 HDS1734 275 0.7 58
Show 12295-6210 VVV 8 57 13.1 60
Show 12352-6323 TDS8447 170 0.8 61
Show 12210-6354 TOB 56 165 11.4 61
Show 12213-6217 EVS 18 AB 134 9.2 61
Show 12213-6217 KRV 39 AC 253 46.4 61
Show 12240-6206 COO 137 342 9.7 63

 
 
WDS 12266-6306 : COMPONENTS
 
 
  A B C D E F G H I J
B pa=115.2°
sep=3.75"
 
C pa=202.4°
sep=90.19"
pa=204.8°
sep=90.08"
 
D pa=202.2°
sep=88.55"
pa=204.6°
sep=88.43"
pa=31.1°
sep=1.65"
 
E pa=202.1°
sep=94.41"
pa=204.4°
sep=94.28"
pa=196.8°
sep=4.25"
pa=200.8°
sep=5.86"
 
F pa=199.9°
sep=91.92"
pa=202.2°
sep=91.65"
pa=134.8°
sep=4.32"
pa=153.7°
sep=4.98"
pa=76.7°
sep=4.41"
 
G pa=162.6°
sep=50.57"
pa=165.9°
sep=48.11"
pa=54.6°
sep=60.65"
pa=55.2°
sep=59.13"
pa=52.3°
sep=64.06"
pa=50.5°
sep=60.07"
 
H pa=173.9°
sep=46.29"
pa=178.0°
sep=44.46"
pa=46.4°
sep=54.19"
pa=46.9°
sep=52.59"
pa=44.3°
sep=57.92"
pa=41.8°
sep=54.24"
pa=282.3°
sep=10.43"
 
I pa=206.0°
sep=47.92"
pa=210.4°
sep=48.12"
pa=18.3°
sep=42.46"
pa=17.8°
sep=40.85"
pa=18.2°
sep=46.71"
pa=13.3°
sep=44.56"
pa=278.2°
sep=36.45"
pa=276.5°
sep=26.06"
 
J pa=352.4°
sep=28.65"
pa=346.5°
sep=30.84"
pa=15.3°
sep=115.90"
pa=15.1°
sep=114.31"
pa=15.3°
sep=120.14"
pa=13.5°
sep=118.08"
pa=346.2°
sep=78.95"
pa=353.3°
sep=74.93"
pa=13.5°
sep=73.52"
 
K pa=199.3°
sep=104.84"
pa=201.4°
sep=104.52"
pa=181.4°
sep=15.53"
pa=184.2°
sep=16.99"
pa=175.8°
sep=11.50"
pa=195.4°
sep=12.95"
pa=224.5°
sep=71.05"
pa=216.8°
sep=66.09"
pa=193.8°
sep=57.50"
pa=193.7°
sep=131.03"
 
 
12266-6306 A
 
 
Common name Acrux Meaning a modern contraction of the Bayer designation, coined in the 19th century, but which entered into common use only by the mid-20th century Coord arcsec 2000 122635.94-630556.6 Mag 1.25
Spectral class B1V (blue-white) PmRA -35.00 PmDE -15.0 SAO 251904
HIP 60718 Tycho2 8979-03464-1 HD 108248 HR 4730
GC 16952 CP CP-62 2745 Bayer Alpha 1 Crucis Bayer name Alp1 Cru
FK5 462
SAO
SAO 251904 DelFlag RA1950 PmRA1950 -0.0036
DE1950 PmDE1950 -0.017 Vmag 1.6 SpType B1
Double code Source 74 CatNum 462 DM CP-62 2745
DMcomp A BDsup HD 108248 M HD 9
GC 16952 RA1950rad 3.24544437 DE1950rad -1.09645185 PmRA2000 -0.0044
PmDE2000 -0.012
Hipparcos
Catalog H HIP 60718 Proxy H RAhms 12 26 35.94
DEdms -63 05 56.6 Vmag 0.77 VarFlag R Vmag G
RAdeg 186.65 DEdeg -63.0991 AstroRef A Plx 10.17
CCDM 12266-6306 N CCDM I Nsys 1 Ncomp 2
MultFlag C Source Qual A M HIP AB
Theta 113 Rho 4.102 HD 108248 BD
CD CP CP-62 2745 Dm number -62 2745 VIred -0.26
SpType B0.5IV R SpType Coord arcsec 2000 122635.94-630556.6
Hipparcos 2
HIP 60718 Sn 17 So 3 Nc 2
RArad 3.2576527881 DErad -1.1012862951 Plx 10.13 PmRA -35.83
PmDE -14.86 E RArad 0.37 E DErad 0.36 E Plx 0.5
E pmRA 0.47 E pmDE 0.43 Hpmag 0.6739 E Hpmag 0.0008
SHp 0.008 VA 0 BV -0.243 E BV 0.012
VI -0.26
CCDM
Ccdm 12266-6306 RComp Comp A Note1
Note2 Discov num DRAs -0.12 DDEs 3.7
R dRAs 10 Year Theta Rho
Obs 3 Vmag 1.6 Sp B1 PmNote *
PmRA -25 PmDE -17 Dm number -62 2745 Cat1 CPD
Name2 251904 Cat2 SAO HD 108248 M HD
ADS BDS M ADS BDS N IDS IDS 12210S6233A
HIC 60718
 
 
12266-6306 B
 
 
Coord arcsec 2000 122636.44-630558.2 Coord calc 122636.44-630558.2 Mag 1.55 Spectral class B0.5IV (blue-white)
PmRA -43.00 PmDE -8.0 Calc delta mag 0.3
CCDM
Ccdm 12266-6306 RComp Comp B Note1
Note2 Discov num DRAs 0.56 DDEs 1.9
R dRAs 10 Year 1955 Theta 115 Rho 4.4
Obs 99 Vmag 2.1 Sp B3 PmNote *
PmRA -35 PmDE -7 Dm number Cat1
Name2 Cat2 HD 108249 M HD
ADS BDS M ADS BDS N N IDS IDS 12210S6233B
HIC 60718
 
 
12266-6306 C
 
 
Coord arcsec 2000 122630.88-630720.0 Coord calc 122630.88-630720.0 Mag 5.4 Spectral class B4IV (blue-white)
PmRA -38.00 PmDE -15.0 SAO 251903 Tycho2 8979-03466-1
HD 108250 HR 4729 GC 16951 DM CP-62 2742
Flamsteed 256 Crucis Flamsteed name 256 Cru Calc delta mag 4.15
Tycho2
Tycho2 8979-03466-1 Pflag RAmdeg 186.62868845 DEmdeg -63.12223768
PmRA -38.0 PmDE -15.3 E RAmdeg 3 E DEmdeg 3
E pmRA 0.9 E pmDE 1.0 EpRAm 1991.51 EpDEm 1991.41
Num 15 Q RAmdeg 1.7 Q DEmdeg 1.7 Q pmRA 1.8
Q pmDE 1.7 BTmag 4.644 E BTmag 0.014 VTmag 4.799
E VTmag 0.009 Prox 900 TYC T HIP
CCDM RAdeg 186.62888111 DEdeg -63.12220167 EpRA 1990 1.74
EpDE 1990 1.57 E RAdeg 3.2 E DEdeg 3.3 Posflg
Corr 0.0
SAO
SAO 251903 DelFlag RA1950 PmRA1950 -0.0051
DE1950 PmDE1950 -0.03 Vmag 5.1 SpType B5
Double code Source 70 CatNum 16951 DM CP-62 2742
DMcomp BDsup HD 108250 M HD 0
GC 16951 RA1950rad 3.24508305 DE1950rad -1.09685849 PmRA2000 -0.0059
PmDE2000 -0.025
CCDM
Ccdm 12266-6306 RComp Comp C Note1
Note2 Discov num DRAs -5.17 DDEs -80.4
R dRAs 10 Year 1826 Theta 202 Rho 90.1
Obs 12 Vmag 5.1 Sp B5 PmNote *
PmRA -42 PmDE -22 Dm number -62 2742 Cat1 CPD
Name2 251903 Cat2 SAO HD 108250 M HD
ADS BDS M ADS BDS N IDS IDS 12210S6233C
HIC
 
 
12266-6306 D
 
 
Coord arcsec 2000 122631.01-630718.6 Mag 10.5 Calc delta mag 9.25 Calc coord yes
 
 
12266-6306 E
 
 
Coord arcsec 2000 122630.70-630724.1 Mag 17 Calc delta mag 15.75 Calc coord yes
 
 
12266-6306 F
 
 
Coord arcsec 2000 122631.33-630723.0 Mag 15.97 PmRA -7.00 PmDE 0.0
Calc delta mag 14.72 Calc coord yes
 
 
12266-6306 G
 
 
Coord arcsec 2000 122638.17-630644.9 Mag 12 Calc delta mag 10.75 Calc coord yes
 
 
12266-6306 H
 
 
Coord arcsec 2000 122636.67-630642.6 Mag 13 Calc delta mag 11.75 Calc coord yes
 
 
12266-6306 I
 
 
Coord arcsec 2000 122632.85-630639.7 Mag 12 Calc delta mag 10.75 Calc coord yes
 
 
12266-6306 J
 
 
Coord arcsec 2000 122635.38-630528.2 Mag 12 Calc delta mag 10.75 Calc coord yes
 
 
12266-6306 K
 
 
Coord arcsec 2000 122630.82-630735.5 Mag 13 Calc delta mag 11.75 Calc coord yes